Board Thread:Pokémon Help/@comment-33667836-20180105123257/@comment-30757623-20180105141921

This could be cuz 3 reasons:

1. You didn't run enough time. Keep running some more.

2. They are same gender. Change it.

3. It's a bug. Report it and wait for it to be fixed.

If u dont want to try this things try with other pokemon.